This paper presents the usage of SOFA Timoshenko-beam plugin, a software framework for Finite Element Analysis (FEM) of deformable structures, for dynamic simulation of a Concentric Tube Robot (CTR). The simulation results are compared with a recently proposed Reduced-Order Modelling technique, via shape interpolation, for CTR dynamics in capturing the system unstable rapid motion, known as snapping. Our preliminary study shows real time performance of the developed model. However, the simulations could not predict any snapping instances, despite consideration of the torsional deformation energy in the plugin and regardless of the small values for the friction coefficient, Rayleigh stiffness and mass damping. We conclude that presented scene based on the SOFA Timoshenko-beam plugin is reliable for modelling stable motions of a CTR. However, the plugin needs to be improved to correctly account for dynamics of an unstable system.